{"id":1994,"date":"2023-07-24T04:13:41","date_gmt":"2023-07-24T04:13:41","guid":{"rendered":"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/"},"modified":"2023-07-24T04:13:41","modified_gmt":"2023-07-24T04:13:41","slug":"istogrammi-multipli-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/","title":{"rendered":"Come tracciare pi\u00f9 istogrammi in r (con esempi)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u00c8 possibile utilizzare la seguente sintassi per tracciare pi\u00f9 istogrammi sullo stesso grafico in <strong>base R<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>hist(data1, col=' <span style=\"color: #ff0000;\">red<\/span> ')\nhist(data2, col=' <span style=\"color: #ff0000;\">blue<\/span> ', add= <span style=\"color: #008000;\">TRUE<\/span> )\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">E puoi utilizzare la seguente sintassi per tracciare pi\u00f9 istogrammi in <strong>ggplot2<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(df, aes(x = x_var, fill = grouping_var)) +\n  geom_histogram(position = ' <span style=\"color: #ff0000;\">identity<\/span> ', alpha = <span style=\"color: #008000;\">0.4<\/span> )<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Gli esempi seguenti mostrano come utilizzare nella pratica ciascuno di questi metodi.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Metodo 1: disegna diversi istogrammi in base R<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come tracciare pi\u00f9 istogrammi in un unico grafico in base R:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#define data\n<\/span>x1 = rnorm(1000, mean=0.8, sd=0.2)\nx2 = rnorm(1000, mean=0.4, sd=0.1)\n\n<span style=\"color: #008080;\">#plot two histograms in same graph\n<span style=\"color: #000000;\">hist(x1, col=' <span style=\"color: #ff0000;\">red<\/span> ', xlim=c(0, 1.5), main=' <span style=\"color: #ff0000;\">Multiple Histograms<\/span> ', xlab=' <span style=\"color: #ff0000;\">x<\/span> ')\nhist(x2, col=' <span style=\"color: #ff0000;\">green<\/span> ', add= <span style=\"color: #008000;\">TRUE<\/span> )<\/span>\n\n#add legend\n<span style=\"color: #000000;\">legend(' <span style=\"color: #ff0000;\">topright<\/span> ', c(' <span style=\"color: #ff0000;\">x1 variable<\/span> ', ' <span style=\"color: #ff0000;\">x2 variable<\/span> '), fill=c(' <span style=\"color: #ff0000;\">red<\/span> ', ' <span style=\"color: #ff0000;\">green<\/span> '))<\/span><\/span><\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-18766\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/multhist1.png\" alt=\"Istogrammi multipli in un unico grafico in R\" width=\"466\" height=\"439\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Metodo 2: traccia pi\u00f9 istogrammi in ggplot2<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come tracciare pi\u00f9 istogrammi in un unico grafico in R utilizzando <a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">ggplot2<\/a> :<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #993300;\">library<\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (var = c(rep(' <span style=\"color: #ff0000;\">x1<\/span> ', 1000), rep(' <span style=\"color: #ff0000;\">x2<\/span> ', 1000) ),\n                   value = c(rnorm(1000, mean=0.8, sd=0.1),\n                             rnorm(1000, mean=0.4, sd=0.1)))\n\n<span style=\"color: #008080;\">#view first six rows of data frame\n<\/span>head(df)\n\n  var value\n1 x1 0.7373546\n2 x1 0.8183643\n3 x1 0.7164371\n4x1 0.9595281\n5 x1 0.8329508\n6 x1 0.7179532\n\n<span style=\"color: #008080;\">#plot multiple histograms\n<\/span>ggplot(df, aes(x=value, fill=var)) +\n  geom_histogram(color=' <span style=\"color: #ff0000;\">#e9ecef<\/span> ', alpha=0.6, position=' <span style=\"color: #ff0000;\">identity<\/span> ')\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-18767 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/multhist2.png\" alt=\"\" width=\"450\" height=\"449\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Puoi modificare rapidamente i colori degli istogrammi utilizzando la funzione <strong>scale_fill_manual()<\/strong> :<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-18768 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/multhist3.png\" alt=\"\" width=\"446\" height=\"442\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Risorse addizionali<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">I seguenti tutorial spiegano come creare altri grafici comuni in R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/it\/istogramma-della-frequenza-relativa-r\/\" target=\"_blank\" rel=\"noopener\">Come creare un istogramma di frequenza relativo in R<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/boxplot-multipli-r\/\" target=\"_blank\" rel=\"noopener\">Come tracciare pi\u00f9 boxplot in un singolo grafico in R<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/come-tracciare-piu-linee-di-dati-in-serie-in-un-grafico-in-r\/\" target=\"_blank\" rel=\"noopener\">Come tracciare pi\u00f9 linee in un grafico in R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c8 possibile utilizzare la seguente sintassi per tracciare pi\u00f9 istogrammi sullo stesso grafico in base R : hist(data1, col=&#8217; red &#8216;) hist(data2, col=&#8217; blue &#8216;, add= TRUE ) E puoi utilizzare la seguente sintassi per tracciare pi\u00f9 istogrammi in ggplot2 : ggplot(df, aes(x = x_var, fill = grouping_var)) + geom_histogram(position = &#8216; identity &#8216;, alpha [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Come tracciare pi\u00f9 istogrammi in R (con esempi) - Statorials<\/title>\n<meta name=\"description\" content=\"Questo tutorial spiega come tracciare pi\u00f9 istogrammi nello stesso grafico in R, con diversi esempi.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Come tracciare pi\u00f9 istogrammi in R (con esempi) - Statorials\" \/>\n<meta property=\"og:description\" content=\"Questo tutorial spiega come tracciare pi\u00f9 istogrammi nello stesso grafico in R, con diversi esempi.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T04:13:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/multhist1.png\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/\",\"url\":\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/\",\"name\":\"Come tracciare pi\u00f9 istogrammi in R (con esempi) - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/it\/#website\"},\"datePublished\":\"2023-07-24T04:13:41+00:00\",\"dateModified\":\"2023-07-24T04:13:41+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\"},\"description\":\"Questo tutorial spiega come tracciare pi\u00f9 istogrammi nello stesso grafico in R, con diversi esempi.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/it\/istogrammi-multipli-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Casa\",\"item\":\"https:\/\/statorials.org\/it\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Come tracciare pi\u00f9 istogrammi in r (con esempi)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/it\/#website\",\"url\":\"https:\/\/statorials.org\/it\/\",\"name\":\"Statorials\",\"description\":\"La tua guida all&#039;alfabetizzazione statistica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/it\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Ciao, sono Benjamin, un professore di statistica in pensione diventato insegnante dedicato di Statorials. 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